package com.design.principle.simpleResponsibility.interfaced;

/**
 * @program: designPattern
 * @description:
 * @author: STU756
 * @create: 2021-01-19 00:19
 */
public interface ICourse {
    String getCourseName();
    byte[] getCourseVideo();

    void studyCourse();
    void refundCourse();
}
